Filter activities

This section describes the filters and fields that can be used to filter search results for this endpoint. The example given is the most simple way to pass a filter into the call. For a more in-depth explanation of boolean filtering, consult the section near the top of this page dealing with filtering.

The following are all the Activity fields that can currently be filtered on, and which filters can be used on each:

`id` - greater_than, less_than, between, exactly, is_empty
`data_item.id` - greater_than, less_than, between, exactly, is_empty
`data_item.type` - exactly, is_empty
`date - greater_than`, less_than, between, is_empty
`regarding_id` - greater_than, less_than, between, exactly, is_empty
`type` - exactly, is_empty
`notes` - contains, exactly, is_empty
`entered_by_id` - greater_than, less_than, between, exactly, is_empty
`date_created` - greater_than, less_than, between, is_empty
`date_modified` - greater_than, less_than, between, is_empty